Machine for bending and coiling pipe



Nmdel" H; E'. FOW'LBR.

MACHINE FOR BBNDING AND COILING PIPE. No. 397,793. i Patented Feb. 1 2,18891 nuite? l 1 33 9 HIIIIIIIHIIIIHIHHIINH" HIIIIIHIIIIIIIII IH l W 2634' :mmmmrmmn mnu f Km mumumumu Wi' {Meow/y, Summum drive-shaft 3.

UNrTnn STATES PATENT CFFicE.

HERBERT E. FOVLER, OF NEV HAVEN, CONNECTICUT.

MACHINE FOR BNDING AND COILING PIPE.

SPECIFCATION forming part of Letters Patent No. 397,793, dated February12, 1889.

Application filed June 20, 1888. Serial No. 277,659. (No model.)

To all whom it may concern:

Be it known that l, HERBERT E. FOWLER, a citizen of the United States,residing at New Haven, in the county of New Haven and State ofConnecticut, have invented certain new and useful Improvements inMachines for Bending and Ceiling Pipe; and I Clo-.hereby declare thefollowing te be a full, clear, and exact description of the in vention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to machines for bend'- ing and ceiling pipe; and-it consists in the improved construction and arrangement or combinationof parts hereinafter fully disclosed in the description, drawings, andclaims.

The objects of my invention are, first, te provide a machine for bendingand ceiling pipe with a bending-roller which will bear against the sideof the pipe and bend it immediately after it leaves the feed-rollers;second, to form one of the feed-rollers'of a pipebending machine with adeep groove in the bottom of a shallow, partly-cylindrical, andcircumferential. groove, and to provide a narrow bending-roller whichwill project with its periphery into said deep groove; third, to journalsaid bending-roller upon an adjustable slide for adjusting it to bendcoils of varying diameter, and, fourth, to journal said bending-rollerupon a block or frame which is provided with means for laterallyadjusting it, and to support said bleek or frame upon a slide providedwith means for adjusting it toward and from the feed-rollers.

The construction of the machine by which I accomplish these objects isshown in the accompanying drawings, forming part of this specification,and in which the same reference-numerals indicate the same parts.

Figure l represents a top plan view of my improved machine for bendingand ceiling pipe, the coiled pipe being indicated by dotted lines; Fig.2, a vertical section on the line x x of Fig. l, and Fig. 3 a verticalsection on the line y y of Fig. l.

In the drawings, the numeral l indicates the machine table or frame,which is provided upon its under side with bearings 2 for the Saiddrive-shaft 3 is provided with a suitable drive-pulley, 4, at its outerend, and at its inner end with a worm, 5,'

end', against which the inner end of a screw,

l1, (which tits and turns in a corresponding perforation, l2, in a lip,13, upon the edge of the machine frame or table, and is provided with asuitable hand-wheel, 14, at its outer end,) may bear. A shaft orspindle, l5, is journaled in a bearing, 16, in the inner end of saidslide or block, and has a cog-wheel, 17, upon its lower end, whichmeshes with a I cog-wheel, 18, upon the shaft or spindle 7 below saidtable or frame, but above the wormwheel upon said shaft. A feed-roller,19, is removably secured upon said shaft or spindle 7 above the table orframe, and said roller` is formed with a slightly less thansemi-cylindrical circumferential groove, 20. Afeed-roller, 2l, isremovably secured upon the shaft or spindle l5 in the adjustable slideor block 8, and isformed with a slightly less than semi-cylindricalcircumferential groove, 22, and with a still deeper narrow groove, 23,in the bottom of said groove A guide-roller, 24, is journaled upon theinachine frame or table with its periphery in a line with saiddeeply-grooved feed-roller 2l and in a line at right angles to a linedrawn between the centers of the two feed-rollers 19 and 2l.

The machine frame er table is formed with a diagonal slot,25, whichextends from one corner of said table and toward the space between thefeed-rollers, and a slide or block, 26, fits and slides in said slot andhas an upwardly-proj ecting lip, 27, at its outer end. The

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deep groove in the feed-roller 2l, and is formed with a circumferentialpartly-cylindrical groove, 3l, which is Vformed with the same radius asthe grooves of the feed-rollers, so that said groove 3l may form a.continuation ot' the groove 22 in said feed-rollerQl, as will be seen byreference to Fig. 2 of the drawings. An upwardily-projecting lip, B5, isformed atthe edge and ncarthe outer end ot' the slot 25, and a` screw,3G, provided with a hand-wheel or disk, 37, is fitted in a threadedperforation, 3S, in said lip and bears with its inner end against theside edge ot the outer end or portion of said pivoted block or plateSi).

An oblique guide, 39, or a guideeroller or similar device is adjustablysecured upon the machine frame ortable at the forward or feed 5 side ofthe feed-roller l0 and serves to guide the coil as it is formed by therollers above the same.

In practice feed and guide rollers of the appropriate diameter for thecoils to be made, and having their ci-rcum-ferential grooves of a sizeto snugly lit the pipe to be bent, are adjusted in their proper places,the adjustable slide for the deeply-grooved feed-roller 2l and the longcogs of the gear-wheels upon the roller-shafts or spindles admitting offeedrollers of varying diameters being' used, and a bending-roller of'asuitable diameter and with a circumferential groove correspondin to thegrooves in the feed and guide rollers is adjusted. The pipe `is nowinserted between the feed rollers, and the narrow bending-v roller will,by bearing against one side ol' said pipe and, by being forced againstit by the screw 98, bend it, and, when the desired bend or diameter ofcoil has been attained, by adjusting said bending-roller by means of thescrews 28 and 36 the pipe may be fed through the rollers andv coiledwithout any stoppage or further adjustment, the guide 39 guiding thecoils above the feed-rollers and preventing their beingl fouled orobstructed by the pipe which is fed into the machine.

It will be obvious that the diameter of the coils is adjusted by theadjustment of the bending-roller, and that the diameter will beincreased by tilting said roller out from the feed-rollers by means ofthe laterally-tilting lframe and its side screw, 36, and by drawing saidroller away by the slide and its screw 28. When a cylindrical coil isformed, the bend ingeroller remains in its adjusted position; but when aconical coil is to be formed the bendingfroller is first gradually fedtoward the feed-rollers and pipe by means ot' the slide and the endscrew, 2S, forming the larger coils, and thereupon, when. said slidelhas arrived at the inner end of its slot, fed into the deep groove inthe feed-roller and still closer to said pipe, forming the smaller coilsby means of the tilting frame or plate and the side screw, 36.

It will be obvious that, on account ot' the bendi u g-rollcr proj ectininto the'deep groove of the feed-roller, said roller will bear againstthe pipe in the space between the feed-rollers and at a point very closeto the point at which the d`eeply-groove fl feerl-roller bears againstit, so that the pipe will be gradually and evcnlybent and fullysupported while it is being bent, said leed-roller and bemlingrollerfollowing the contour ot the opposite feed-roller for a portion of itsperiphery, and thus forming a perfect support for the pipe while it isbeing bent and causing a smooth and even curve without breaks andstraight or uneven portions.

Instead of havingthe bending-roller to project into a groove in thefeed-roller, said roller maybe so shaped as to project into the spacebetween the t'eed -rollers in various other ways, or it maybesubstituted by one or more` smaller shaping or bending rollers or asinnlar shaping or bending device without departing from the spirit ofmy invention, and one-form of such arrangement of shaping or bendingrollers forms the sul'Jject-matter ot another application for LettersPatent, which is liled together with this application.

Having thus fully described the construction and arrangement orcombination ot' my improved machine for bending and coiling pipe, withits operation and advantages, what l claim as new is l. In a machine forbending and coiling pipe, thc combination, with a groovcd feed-roll, ot'a. feed-roll having a groove ot' greater depth and a bending and shapingroll having its periphery extending i nto the periphery oi' saiddeeply-grooved roll, substantially as specified.

In a machine for bending and coiling pipe, the combination, with agrooved feed-roll, of a feed-roll having a groove of greater depth andan adjustably arranged bending and shaping roll having its peripheryextending into the periphery oi' said deeplygrooved.feedroll,substantially as specified.

3. Ina machine forben ding and ceiling pipe, the combination, with apair of. feed-rollers', of a bending-roller which projects into thespace between said feed-rollers` to a point within the periphery of oneof them, and' a slide which forms a bearing for saidA roller and isprovided with a feed-screw for adjusting it toward and from saidfeedrollers, subn stantially as described.

l. ln a machine for bending and ceiling pipe, the combination, with apair of feedrollers, of a slide provided with av screw for adjusting itVtoward and from the space between said feed-rollers, a plate or framepivoted upon said slide, a screw for tilting, or laterally adj ustingsaid pivoted plate or'i'rame, anda bending-rollerwhich is j ournaledupon the inner end of said plate or frame, and, together with one ot'said feed-rollers, forces the pipe to follow the contour ot' theopposite feed-roller for a portion of its periphery, substantially asdescribed.

5. In a. machine for bending and ceiling pipe, the combination ol' aifeed-roller, an op positev feed-roller lormedwith a deep groove IOO IIO

in its periphery, and a bending-roller which is journaled to projectwith its edge into the deep groove of said feed-roller, and, togetherwith said roller7 to force the pipe to follow the contour oi' said otherfeed-roller for a portion of its periphery,'substantially as described.

o'. In a machine ij'or bending and ceiling pipe, the combination of afeed-roller formed with a circumferential groove, a feed-roller 'formedwith a circumferential groove and a deeper groove in the bottom of saidgroove, and a narrow bending-roller which is journaled to project intosaid deeper groove and formed with a circumferential groove of the samediameter as the grooves in said lfeedrollers, and which, together withsaid deeplygroovcd roller, forces the pipe to follow the contour of theopposite feed-roller for a portion of its periphery, substantially asdescribed.

7. In a machine for bending and ceiling pipe, the combination of acircumferentiallygrooved feed-roller, an opposite feed-roller formedwith a circumferential groove and with a deep groove in the bottom ofsaid circumferential groove, a circumferentiallygroovcd bending-rollerwhich is jonrnaled to project into said deep groove, and, together withsaid deeply-groovcd feed-roller, to force the pipe to follow the contourof the opposite feed-roller for a portion of its periphery, and meansfor adjusting said bending-roller to project more or less into saiddeeply-groovcd roller and toward said opposite feed-roller,substantially as described.

S. In a machine for bending' and ceiling pipe, the combination of acircumferentiallythe inner end of said slide toproject into the l deepgroove of said feed-roller, and, together with said feed-roller, toforce the pipe to follow the centen r ofthe opposite feed-roller for aportion o1' its periphery, substantially as described.

9. In a machine for bending and coiling pipe, the combination of themachine frame or table formed with the diagonal slot 25, thecircumferentially-grooved feed-roller 19, the opposite feed-roller, 2l,formed with the cor'- responding circumferential groove, 22, and with adeep groove, 3, in the bottom of said groove, the guide-roller 24, theoblique guide 39, the slide or block 2G in said diagonal slot, the screw28, for adj listing said slide, the plate or block 32, pivoted upon saidslide, the screw 3G, for laterally adjusting said plate or block, andthe narrow bending-roller 33, which is journaled at the inner end ofsaid pivoted plate or block and projects into the groove 23 of saidfeed-roller 2l, substantially as de-V scribed.

In testimony whereof I afiix my signature in presence of two witnesses.

HERBERT E. FOWLER. Witnesses:

CHARLES H. HAYDEN, MICHAEL R. ENsCoE.

